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                                <h1 id="cvpr2018graphreid">CVPR2018:Graph+reid</h1>
<h2 id="graph--reid">Graph + Reid</h2>
<p>&#x4ECA;&#x5929;&#x89E3;&#x8BFB;&#x6E2F;&#x4E2D;&#x6587;&#x5546;&#x6C64;&#x8054;&#x5408;&#x5B9E;&#x9A8C;&#x5BA4;&#x6C88;&#x5CA9;&#x6D9B;&#x8001;&#x5E08;&#x5728;CVPR2018&#x548C;ECCV2018&#x4E0A;&#x53D1;&#x8868;&#x7684;&#x4E24;&#x7BC7;&#x5173;&#x4E8E;Graph+Person reid&#x7684;&#x6587;&#x7AE0;&#xFF1A;</p>
<p>CVPR2018&#xFF1A;Deep Group-shuffling Random Walk for Person Re-identification ECCV2018&#xFF1A;Person Re-identification with Deep Similarity-Guided Graph Neural Network</p>
<h2 id="motivation-and-related-work">Motivation and Related Work</h2>
<p>person reid&#x8FD9;&#x4E2A;&#x4EFB;&#x52A1;&#x662F;&#x4E3A;probe&#x56FE;&#x50CF;&#x5728;gallery&#x56FE;&#x7247;&#x96C6;&#x4E2D;&#x5BFB;&#x627E;&#x5C5E;&#x4E8E;&#x540C;&#x4E00;&#x4E2A;&#x4EBA;&#x7684;&#x56FE;&#x7247;&#xFF0C;&#x6240;&#x4EE5;&#x901A;&#x5E38;&#x7684;&#x505A;&#x6CD5;&#x90FD;&#x662F;&#x8003;&#x8651;probe&#x548C;gallery&#x4E4B;&#x95F4;&#x7684;&#x5173;&#x7CFB;&#xFF0C;&#x4F46;&#x6709;&#x65F6;&#x5019;probe&#x548C;gallery&#x7684;&#x5DEE;&#x522B;&#x592A;&#x5927;&#xFF0C;&#x6BD4;&#x5982;&#x4E00;&#x4E2A;&#x6B63;&#x9762;&#x7684;&#x4EBA;&#x548C;&#x4E00;&#x4E2A;&#x80CC;&#x9762;&#x7684;&#x4EBA;&#xFF0C;&#x5047;&#x5982;&#x6211;&#x6709;&#x4E00;&#x4E2A;&#x4FA7;&#x9762;&#x7684;&#x4EBA;&#x7684;&#x56FE;&#x7247;&#xFF0C;&#x8DDF;&#x4E24;&#x8005;&#x90FD;&#x5F88;&#x50CF;&#xFF0C;&#x5C31;&#x6709;&#x53EF;&#x80FD;&#x7528;&#x8FD9;&#x4E2A;&#x4E2D;&#x95F4;&#x56FE;&#x7247;&#x5C06;&#x4E24;&#x8005;&#x5173;&#x8054;&#x8D77;&#x6765;&#x3002;&#x5728;&#x8FD9;&#x4E4B;&#x524D;&#x5176;&#x5B9E;&#x4E5F;&#x6709;&#x4EBA;&#x63D0;&#x51FA;&#x8FC7;&#x4E00;&#x4E9B;&#x65B9;&#x6CD5;&#xFF0C;&#x6BD4;&#x5982;CVPR2017:Re-ranking person re-identification with k-reciprocal encoding. &#x5148;&#x8BA1;&#x7B97;&#x51FA;gallery&#x56FE;&#x7247;&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;&#x5C06;&#x8F83;&#x76F8;&#x4F3C;&#x7684;&#x56FE;&#x7247;&#x7684;rank&#x62C9;&#x8FD1;&#x3002;</p>
<p>&#x4F46;&#x8FD9;&#x4E9B;&#x65B9;&#x6CD5;&#x5927;&#x591A;&#x662F;&#x5C06;&#x8FD9;&#x79CD;&#x5173;&#x7CFB;&#x62BD;&#x53D6;&#x548C;&#x5229;&#x7528;&#x4F5C;&#x4E3A;&#x4E00;&#x4E2A;&#x540E;&#x5904;&#x7406;&#x7684;&#x8FC7;&#x7A0B;&#xFF0C;&#x5BF9;&#x56FE;&#x50CF;&#x6A21;&#x578B;&#x7684;&#x8BAD;&#x7EC3;&#x8D77;&#x4E0D;&#x5230;&#x5E2E;&#x52A9;&#x3002;&#x5E76;&#x4E14;&#x5BF9;gallery&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x63D0;&#x53D6;&#x5927;&#x591A;&#x662F;&#x57FA;&#x4E8E;&#x5DF2;&#x7ECF;&#x8BAD;&#x7EC3;&#x597D;&#x7684;&#x56FE;&#x50CF;&#x6A21;&#x578B;&#xFF0C;&#x52A0;&#x4E0A;&#x65E0;&#x76D1;&#x7763;&#x7684;&#x805A;&#x7C7B;&#x65B9;&#x6CD5;&#xFF0C;&#x63D0;&#x53D6;gallery&#x56FE;&#x7247;&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x5173;&#x7CFB;&#xFF0C;&#x8FD9;&#x79CD;&#x65E0;&#x76D1;&#x7763;&#x65B9;&#x6CD5;&#x8F83;&#x5F31;&#xFF0C;&#x4E0D;&#x80FD;&#x5145;&#x5206;&#x5229;&#x7528;&#x6570;&#x636E;&#x96C6;&#x4E2D;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x606F;&#x3002;</p>
<p>&#x56E0;&#x6B64;&#x8FD9;&#x4E24;&#x7BC7;&#x6587;&#x7AE0;&#x5F00;&#x59CB;&#x5C06;gallery&#x4E4B;&#x95F4;&#x7684;&#x5173;&#x7CFB;&#xFF08;&#x4E0B;&#x9762;&#x7B80;&#x79F0;G2G&#xFF09;&#x878D;&#x5165;&#x5230;&#x56FE;&#x50CF;&#x6A21;&#x578B;&#x7684;&#x8BAD;&#x7EC3;&#x91CC;&#x3002;Graph&#x7531;&#x8BB8;&#x591A;&#x8282;&#x70B9;&#x548C;&#x8FB9;&#x6784;&#x6210;&#xFF0C;&#x5728;Reid&#x95EE;&#x9898;&#x91CC;&#xFF0C;&#x8282;&#x70B9;&#x5C31;&#x662F;&#x4E00;&#x4E2A;&#x4E2A;&#x7684;&#x4EBA;&#x7684;&#x56FE;&#x50CF;&#xFF0C;&#x8FB9;&#x5C31;&#x662F;&#x56FE;&#x50CF;&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x3002;&#x5229;&#x7528;&#x4E00;&#x4E2A;batch&#x4E2D;&#x7684;&#x6240;&#x6709;&#x56FE;&#x50CF;&#x5728;&#x5173;&#x7CFB;&#x56FE;&#x4E0A;&#x7684;&#x5173;&#x8054;&#xFF0C;&#x63D0;&#x4F9B;&#x66F4;&#x591A;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#xFF0C;&#x5C06;&#x6A21;&#x578B;&#x8BAD;&#x7EC3;&#x7684;&#x66F4;&#x597D;&#x3002;&#x4E4B;&#x6240;&#x4EE5;&#x8BF4;&#x66F4;&#x591A;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#xFF0C;&#x662F;&#x56E0;&#x4E3A;&#x4EE5;&#x5F80;&#x6211;&#x4EEC;&#x4E00;&#x4E2A;batch&#x7684;label&#x53EA;&#x6709;batch_size&#x5BF9;&#x6837;&#x672C;&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5173;&#x7CFB;&#xFF0C;&#x4F46;&#x5C06;batch&#x4E2D;&#x7684;&#x6240;&#x6709;&#x56FE;&#x7247;&#x770B;&#x6210;batch size&#x4E2A;&#x56FE;&#x4E4B;&#x540E;&#xFF0C;&#x6BCF;&#x4E2A;&#x56FE;&#x4E4B;&#x95F4;&#x6709;batch gallery size x batch gallery size&#x4E2A;&#x76F8;&#x4F3C;&#x5EA6;&#x5173;&#x7CFB;&#x53EF;&#x4EE5;&#x5B66;&#x4E60;&#xFF0C;&#x5C31;&#x5F15;&#x5165;&#x4E86;&#x66F4;&#x591A;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#x3002;</p>
<h3 id="overview">Overview</h3>
<p><img src="cuhk_sentimes_0.png" alt="">
&#x8FD9;&#x4E24;&#x7BC7;&#x6587;&#x7AE0;&#x662F;&#x540C;&#x4E00;&#x73ED;&#x4EBA;&#x9A6C;&#x5199;&#x7684;&#xFF0C;&#x6240;&#x4EE5;&#x5176;&#x5B9E;&#x6574;&#x4F53;&#x7ED3;&#x6784;&#x4E0A;&#x90FD;&#x5F88;&#x50CF;&#xFF0C;&#x6211;&#x4EEC;&#x7ED3;&#x5408;&#x8D77;&#x6765;&#x5206;&#x6790;&#xFF1A;</p>
<ul>
<li>DGRW&#x662F;&#x7528;Random Walk&#x7684;&#x65B9;&#x5F0F;&#x5C06;G2G&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x4FE1;&#x606F;&#x7528;&#x6765;&#x66F4;&#x65B0;P2G&#x7684;<strong>&#x76F8;&#x4F3C;&#x5EA6;&#x5173;&#x7CFB;</strong>&#xFF0C;&#x5728;&#x53CD;&#x5411;&#x4F20;&#x64AD;&#x65F6;&#x901A;&#x8FC7;G2G&#x8FD9;&#x4E2A;&#x5F88;&#x591A;&#x76F8;&#x4F3C;&#x5EA6;&#x5173;&#x8054;&#x7684;&#x56FE;&#x5BF9;&#x539F;&#x6765;&#x7684;&#x56FE;&#x50CF;&#x6A21;&#x578B;&#x63D0;&#x4F9B;&#x66F4;&#x591A;&#x7684;&#x8BAD;&#x7EC3;&#x3002;</li>
<li>SGGNN&#x662F;&#x7528;G2G&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x5173;&#x7CFB;&#x5BF9;P2G&#x7684;<strong>&#x76F8;&#x4F3C;&#x5EA6;&#x7279;&#x5F81;</strong>&#x8FDB;&#x884C;&#x4FEE;&#x6B63;&#xFF0C;&#x4ECE;&#x800C;&#x5F97;&#x5230;&#x66F4;&#x597D;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x7279;&#x5F81;&#xFF0C;&#x5E76;&#x4E14;&#x4E5F;&#x901A;&#x8FC7;G2G&#x4E4B;&#x95F4;&#x7684;&#x5927;&#x91CF;&#x5173;&#x8054;&#x63D0;&#x4F9B;&#x4E86;&#x66F4;&#x591A;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#x3002;</li>
</ul>
<h3 id="deep-group-shuffling-random-walk">Deep Group-shuffling Random Walk</h3>
<p>&#x4E0E;&#x5176;&#x4ED6;Reid&#x65B9;&#x6CD5;&#x4E00;&#x6837;&#xFF0C;&#x9996;&#x5148;&#x8BAD;&#x7EC3;&#x4E00;&#x4E2A;&#x56FE;&#x50CF;&#x6A21;&#x578B;&#x63D0;&#x53D6;&#x56FE;&#x50CF;&#x7279;&#x5F81;&#xFF0C;&#x5BF9;&#x7279;&#x5F81;&#x8BA1;&#x7B97;&#x76F8;&#x4F3C;&#x5EA6;&#x53EF;&#x4EE5;&#x5F97;&#x5230;probe&#x4E2D;&#x6240;&#x6709;&#x56FE;&#x7247;&#x4E0E;gallery&#x4E2D;&#x6240;&#x6709;&#x56FE;&#x7247;&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;&#x4E0E;&#x5176;&#x4ED6;Reid&#x65B9;&#x6CD5;&#x4E0D;&#x540C;&#xFF0C;&#x4F46;&#x4E0E;reranking&#x76F8;&#x540C;&#x7684;&#x662F;&#xFF0C;&#x6211;&#x4EEC;&#x4E5F;&#x53EF;&#x4EE5;&#x8BA1;&#x7B97;&#x51FA;&#x6240;&#x6709;gallery&#x56FE;&#x7247;&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x3002;&#x7ED9;&#x5B9A;&#x4E00;&#x5F20;probe&#x56FE;&#x7247;&#xFF0C;&#x5B83;&#x548C;&#x6240;&#x6709;gallery&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x5411;&#x91CF;&#x4E3A;y&#xFF0C;&#x6240;&#x6709;gallery&#x4E4B;&#x95F4;&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x77E9;&#x9635;&#x4E3A;W&#xFF0C;&#x6211;&#x4EEC;&#x5C06;&#x4E00;&#x5F20;probe&#x56FE;&#x7247;&#x548C;&#x6240;&#x6709;gallery&#x56FE;&#x7247;&#x5408;&#x8D77;&#x6765;&#x770B;&#x6210;&#x4E00;&#x4E2A;&#x56FE;&#xFF0C;&#x6839;&#x636E;random walk&#x7684;&#x601D;&#x60F3;&#xFF0C;probe&#x56FE;&#x7247;&#x8FD9;&#x4E2A;&#x8282;&#x70B9;walk&#x5230;&#x7B2C;j&#x5F20;gallery&#x56FE;&#x7247;&#x7684;&#x6982;&#x7387;&#x662F;yj&#xFF0C;&#x63A5;&#x7740;&#xFF0C;&#x4ECE;probe&#x8282;&#x70B9;&#x51FA;&#x53D1;&#xFF0C;&#x7ECF;&#x8FC7;&#x5176;&#x4ED6;&#x8282;&#x70B9;k&#xFF0C;&#x518D;&#x5230;&#x8FBE;gallery&#x56FE;&#x7247;j&#x7684;&#x6982;&#x7387;&#x662F;yk * Wkj&#xFF0C;&#x90A3;&#x4E48;&#xFF0C;&#x4ECE;probe&#x8282;&#x70B9;&#x51FA;&#x53D1;&#xFF0C;&#x8D70;&#x4E24;&#x6B65;&#xFF08;&#x5305;&#x542B;&#x4E86;&#x6240;&#x6709;&#x4E2D;&#x95F4;&#x8282;&#x70B9;&#x7684;&#x53EF;&#x80FD;&#xFF09;&#x5230;&#x8FBE;&#x56FE;&#x7247;j&#x7684;&#x6982;&#x7387;&#x5C31;&#x662F;&#xFF1A;</p>
<p><script type="math/tex; ">∑_{k=1}^n W_{kj}*y^k</script></p>
<p>&#x5230;&#x8FBE;&#x6240;&#x6709;&#x56FE;&#x7247;j&#x7684;&#x6982;&#x7387;&#x62FC;&#x6210;&#x4E00;&#x4E2A;&#x65B0;&#x7684;&#x5411;&#x91CF;&#xFF0C;&#x6211;&#x4EEC;&#x5C31;&#x53EF;&#x4EE5;&#x5F97;&#x5230;&#xFF1A;</p>
<p><script type="math/tex; ">y^{(t+1)} = Wy^{(t)}</script></p>
<p>&#x8BBA;&#x6587;&#x91CC;&#x8BB2;t&#x62D3;&#x5C55;&#x5230;&#x4E86;&#x65E0;&#x7A77;&#x5927;&#xFF0C;&#x5E76;&#x52A0;&#x5165;&#x4E86;&#x6743;&#x91CD;&#x56E0;&#x5B50;&#x3BB;&#x5BF9;walk&#x524D;&#x540E;&#x7684;&#x6982;&#x7387;&#x8FDB;&#x884C;&#x4E86;&#x5E73;&#x8861;&#xFF0C;&#x6700;&#x7EC8;&#x5316;&#x7B80;&#x4E3A;&#x4E86;&#x8FD9;&#x6837;&#x7684;&#x5F62;&#x5F0F;&#xFF1A;</p>
<p><script type="math/tex; ">y^(\infty)=(1-\lambda )(I-\lambda W)^{-1}y^{(0)}</script></p>
<p>&#x4F46;&#x6839;&#x672C;&#x7684;&#x9053;&#x7406;&#x5C31;&#x662F;&#x4E0A;&#x9762;&#x6240;&#x8FF0;&#x7684;Random walk&#x601D;&#x60F3;&#x3002;</p>
<p>&#x8FD9;&#x6837;&#x6211;&#x4EEC;&#x5C31;&#x5F97;&#x5230;&#x4E86;&#x4E00;&#x7EC4;&#x66F4;&#x597D;&#x7684;P2G&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;&#x5E76;&#x4E14;&#x6211;&#x4EEC;&#x53CD;&#x5411;&#x4F20;&#x64AD;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x8FD9;&#x7EC4;&#x76F8;&#x4F3C;&#x5EA6;&#x7684;&#x68AF;&#x5EA6;&#x4F1A;&#x4F20;&#x5230;W&#x77E9;&#x9635;&#x4E0A;&#xFF0C;W&#x77E9;&#x9635;&#x662F;&#x7531;&#x524D;&#x8FB9;&#x56FE;&#x50CF;&#x6A21;&#x578B;&#x5F97;&#x51FA;&#x7684;&#xFF0C;&#x4E5F;&#x5C31;&#x4F1A;&#x4F20;&#x5230;&#x524D;&#x9762;&#x7684;&#x6A21;&#x578B;&#x4E0A;&#xFF0C;&#x4ECE;&#x800C;&#x5BF9;&#x6A21;&#x578B;&#x63D0;&#x4F9B;&#x66F4;&#x591A;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#x3002;</p>
<p>&#x8BBA;&#x6587;&#x91CC;&#x8FD8;&#x6709;&#x4E00;&#x4E2A;&#x521B;&#x65B0;&#x70B9;&#x662F;&#xFF0C;&#x5C06;&#x89C6;&#x89C9;&#x7279;&#x5F81;&#x5206;&#x6210;&#x4E86;K&#x4E2A;group&#xFF0C;&#x6BCF;&#x4E2A;group&#x7684;&#x7279;&#x5F81;&#x90FD;&#x53EF;&#x4EE5;&#x5355;&#x72EC;&#x62FF;&#x51FA;&#x6765;&#x7528;&#xFF0C;&#x8FD9;&#x6837;&#x6211;&#x4EEC;&#x5C31;&#x53EF;&#x4EE5;&#x505A;K&#x4E2A;&#x4E0A;&#x8FB9;&#x63D0;&#x5230;&#x7684;random walk&#xFF0C;&#x4E8E;&#x662F;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#x66F4;&#x591A;&#x4E86;&#xFF0C;&#x540C;&#x65F6;&#x56E0;&#x4E3A;&#x89C6;&#x89C9;&#x7279;&#x5F81;&#x88AB;&#x62C6;&#x6210;&#x4E86;K&#x4EFD;&#xFF0C;&#x6BCF;&#x4E00;&#x4EFD;&#x90FD;&#x53EA;&#x662F;&#x539F;&#x7279;&#x5F81;&#x7684;&#x4E00;&#x5C0F;&#x90E8;&#x5206;&#xFF0C;&#x76F8;&#x5F53;&#x4E8E;dropout&#x4E86;&#x4E00;&#x90E8;&#x5206;&#x4FE1;&#x606F;&#xFF0C;&#x4E5F;&#x80FD;&#x5F88;&#x5927;&#x7A0B;&#x5EA6;&#x4E0A;&#x9632;&#x6B62;&#x8FC7;&#x62DF;&#x5408;&#x3002;&#x4F46;&#x5176;&#x5B9E;&#x8FD9;&#x4E2A;&#x65B9;&#x6CD5;&#x5E76;&#x4E0D;&#x89C1;&#x5F97;&#x6BD4;dropout&#x4F18;&#x96C5;&#xFF0C;&#x5B9E;&#x9A8C;&#x6548;&#x679C;&#x4E5F;&#x5DEE;&#x4E0D;&#x591A;&#x3002;</p>
<p><img src="cuhk_sentimes_1.png" alt="">
&#x5B9E;&#x73B0;&#x4E0A;&#x8FD8;&#x6709;&#x4E00;&#x4E2A;&#x5C0F;&#x7684;&#x7EC6;&#x8282;&#xFF0C;&#x628A;&#x6240;&#x6709;&#x56FE;&#x7247;&#x6784;&#x6210;&#x4E00;&#x4E2A;graph&#x7684;&#x8BDD;&#xFF0C;&#x5F00;&#x9500;&#x592A;&#x5927;&#x4E86;&#xFF0C;&#x6240;&#x4EE5;&#x8BAD;&#x7EC3;&#x65F6;graph&#x5176;&#x5B9E;&#x53EA;&#x662F;&#x6240;&#x6709;&#x56FE;&#x7247;&#x7684;&#x4E00;&#x4E2A;&#x5B50;&#x56FE;&#xFF0C;</p>
<ul>
<li>&#x9996;&#x5148;&#x6BCF;&#x4E2A;batch&#x6709;64&#x4E2A;&#x4EBA;&#xFF0C;&#x6BCF;&#x4E2A;&#x4EBA;&#x6709;4&#x5F20;&#x56FE;&#xFF0C;&#x8FD9;&#x6837;batch size&#x5C31;&#x662F;256&#xFF08;&#x6D41;&#x4E0B;&#x4E86;&#x8D2B;&#x7A77;&#x7684;&#x6CEA;&#x6C34;&#xFF09;&#xFF0C;</li>
<li>&#x8BAD;&#x7EC3;&#x65F6;&#xFF0C;&#x9996;&#x5148;&#x6709;256&#x4E2A;softmax loss&#xFF0C;</li>
<li>&#x7136;&#x540E;&#x5BF9;&#x4E8E;64&#x4E2A;&#x4EBA;&#xFF0C;&#x6BCF;&#x4E2A;&#x4EBA;&#x7684;4&#x5F20;&#x56FE;&#x4E2D;&#x53D6;1&#x5F20;&#x505A;probe&#xFF0C;3&#x5F20;&#x505A;gallery&#xFF0C;galley&#x662F;&#x6240;&#x6709;&#x4EBA;&#x4E00;&#x8D77;&#x7528;&#x7684;&#xFF08;&#x8FD9;&#x6837;&#x5C31;&#x6709;&#x6B63;&#x6837;&#x672C;&#x4E5F;&#x6709;&#x8D1F;&#x6837;&#x672C;&#xFF09;</li>
<li>&#x8FD9;&#x6837;W&#x77E9;&#x9635;&#x5C31;&#x662F;64_3x64_3&#xFF0C;&#x5BF9;&#x89D2;&#x7EBF;&#x4E3A;0&#xFF0C;&#x4E8E;&#x662F;&#x5C31;&#x6709;192*192&#x4E2A;g2g&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;&#x540C;&#x65F6;&#x6709;64&#x4E2A;p2g&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x3002;&#x8FD9;&#x4E9B;&#x76F8;&#x4F3C;&#x5EA6;&#x53EF;&#x4EE5;&#x7528;&#x771F;&#x5B9E;&#x6807;&#x7B7E;&#x7EA6;&#x675F;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x7528;feature&#x6C42;&#x51FA;&#x6765;&#xFF0C;&#x8BBA;&#x6587;&#x91CC;&#x662F;&#x7528;feature&#x6C42;&#x7684;&#xFF1B;</li>
<li>&#x4E3A;&#x6BCF;&#x4E2A;&#x4EBA;&#x5F97;&#x5230;&#x66F4;&#x65B0;&#x540E;&#x7684;p2g&#x5411;&#x91CF;&#xFF0C;&#x5BF9;&#x8FD9;64&#x4E2A;&#x957F;&#x5EA6;&#x4E3A;192&#x7684;p2g&#x5411;&#x91CF;&#x52A0;&#x4E8C;&#x5206;&#x7C7B;loss&#x5C31;&#x5B8C;&#x6210;&#x8BAD;&#x7EC3;&#x6A21;&#x578B;&#x7684;&#x642D;&#x5EFA;&#x4E86;</li>
<li>&#x6D4B;&#x8BD5;&#x65F6;&#x5148;&#x7B97;&#x6240;&#x6709;p2g&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;&#x7136;&#x540E;&#x5BF9;&#x6BCF;&#x4E2A;probe&#xFF0C;&#x9009;&#x62E9;top75&#x4E2A;gallery&#x7EC4;&#x6210;G2G&#x56FE;&#xFF0C;&#x7528;&#x8FD9;&#x4E2A;G2G&#x66F4;&#x65B0;P2G&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;&#x4ECE;&#x800C;&#x83B7;&#x5F97;&#x66F4;&#x51C6;&#x7684;ranking&#x7ED3;&#x679C;</li>
</ul>
<h3 id="deep-similarity-guided-graph-neural-network">Deep Similarity-Guided Graph Neural Network</h3>
<p>&#x8FD9;&#x7BC7;&#x6587;&#x7AE0;&#x8DDF;&#x4E0A;&#x4E00;&#x7BC7;&#x5F88;&#x591A;&#x5730;&#x65B9;&#x662F;&#x4E00;&#x6837;&#x7684;&#xFF0C;&#x6211;&#x4EEC;&#x6765;&#x8BB2;&#x8BB2;&#x4E0D;&#x540C;&#x7684;&#x5730;&#x65B9;&#x3002;</p>
<h4 id="graph-and-node">Graph and node</h4>
<p>&#x8FD9;&#x7BC7;&#x6587;&#x7AE0;&#x58F0;&#x79F0;&#x6BCF;&#x4E2A;&#x8282;&#x70B9;&#x662F;&#x4E00;&#x4E2A;P2G&#x7684;&#x56FE;&#x50CF;&#x5BF9;&#xFF0C;&#x4F46;&#x5728;&#x8BA8;&#x8BBA;&#x4E2D;&#xFF0C;&#x56FE;&#x91CC;&#x7684;P&#x90FD;&#x662F;&#x76F8;&#x540C;&#x7684;&#xFF0C;&#x6240;&#x4EE5;&#x6211;&#x89C9;&#x5F97;&#x53EF;&#x4EE5;&#x8BA4;&#x4E3A;&#x8FD9;&#x5176;&#x5B9E;&#x4E5F;&#x662F;&#x4E00;&#x4E2A;G2G&#x7684;&#x56FE;&#xFF0C;&#x53EA;&#x4E0D;&#x8FC7;&#x6BCF;&#x4E2A;&#x8282;&#x70B9;&#x7684;value&#x53D8;&#x6210;&#x4E86;SiameseCNN&#x7B97;&#x51FA;&#x6765;&#x7684;P2G&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x5411;&#x91CF;di&#xFF0C;&#x6211;&#x4EEC;&#x7528;&#x901A;&#x5E38;&#x7684;Siamese&#x4E8C;&#x5206;&#x7C7B;loss&#x548C;softmax&#x591A;&#x5206;&#x7C7B;loss&#x7EA6;&#x675F;di&#xFF0C;&#x540C;&#x65F6;&#x6211;&#x4EEC;&#x5E0C;&#x671B;&#x80FD;&#x7528;G2G&#x7684;&#x76F8;&#x4F3C;&#x5EA6;&#x77E9;&#x9635;W&#x6765;&#x8FDB;&#x4E00;&#x6B65;&#x4FEE;&#x6B63;di&#xFF0C;</p>
<h4 id="feature-update">feature update</h4>
<p>&#x8003;&#x8651;&#x4E00;&#x4E0B;&#x7528;&#x7C7B;&#x4F3C;random walk&#x7684;&#x6A21;&#x5F0F;&#x6765;&#x66F4;&#x65B0;&#x76F8;&#x4F3C;&#x5EA6;&#x5411;&#x91CF;&#xFF1A;&#xFF1A;</p>
<p><script type="math/tex; ">d_i^{t+1}=(1-α)d_i^{t+1}+αWd_i^t</script></p>
<p>&#x4F46;dit&#x6BD5;&#x7ADF;&#x4E0D;&#x662F;&#x76F8;&#x4F3C;&#x5EA6;&#x7684;&#x7ED3;&#x679C;&#x5411;&#x91CF;&#xFF0C;&#x800C;&#x662F;&#x76F8;&#x4F3C;&#x5EA6;&#x7279;&#x5F81;&#x5411;&#x91CF;&#xFF0C;&#x6240;&#x4EE5;&#x4E0A;&#x9762;&#x8FD9;&#x4E2A;&#x5F0F;&#x5B50;&#x5176;&#x5B9E;&#x662F;&#x4E0D;&#x6210;&#x7ACB;&#x7684;&#xFF0C;&#x4E8E;&#x662F;&#x8FDB;&#x5165;&#x62FC;&#x51D1;&#x6A21;&#x5F0F;&#xFF0C;&#x6587;&#x4E2D;&#x5B9A;&#x4E49;&#x4E86;&#x4E00;&#x4E2A;&#x6D88;&#x606F;&#x5411;&#x91CF;:</p>
<p><script type="math/tex; ">t_i=F(d_i)</script></p>
<p>&#x8FD9;&#x4E2A;F&#x5C31;&#x662F;d&#x5230;t&#x7684;&#x6620;&#x5C04;&#xFF0C;</p>
<p><img src="cuhk_sentimes_2.png" alt="">
&#x5982;&#x56FE;&#xFF0C;&#x901A;&#x8FC7;&#x4E24;&#x5C42;FC+BN+ReLU&#xFF0C;&#x5C06;&#x76F8;&#x4F3C;&#x5EA6;&#x7279;&#x5F81;d&#x6620;&#x5C04;&#x4E3A;&#x4E00;&#x4E2A;&#x80FD;&#x591F;&#x6839;&#x636E;&#x76F8;&#x4F3C;&#x5EA6;&#x77E9;&#x9635;W&#x4FEE;&#x6B63;&#x7279;&#x5F81;&#x5411;&#x91CF;&#x7684;&#x6D88;&#x606F;&#x5411;&#x91CF;t&#xFF0C;&#x7531;&#x4E8E;&#x6743;&#x91CD;&#x662F;&#x53EF;&#x8BAD;&#x7EC3;&#x7684;&#xFF0C;&#x6240;&#x4EE5;&#x4E0B;&#x9762;&#x8FD9;&#x4E2A;&#x5F0F;&#x5B50;&#x5C31;&#x6210;&#x7ACB;&#x4E86;&#xFF1A;</p>
<p><script type="math/tex; ">d_i^{t+1}=(1-α)d_i^{t+1}+αWt_i^t</script></p>
<p>&#x6587;&#x4E2D;&#x8BF4;W*t&#x5F97;&#x5230;&#x7684;&#x7ED3;&#x679C;&#x662F;fusion feature&#xFF0C;&#x5176;&#x5B9E;&#x6211;&#x89C9;&#x5F97;&#x8FD9;&#x79CD;G2G&#x76F8;&#x4F3C;&#x5EA6;&#x548C;&#x7279;&#x5F81;&#x7684;fusion&#x6CA1;&#x6709;Random Walk&#x6765;&#x5F97;&#x4F18;&#x96C5;&#xFF0C;&#x7136;&#x540E;&#x7528;fusion feature&#x548C;&#x539F;&#x6765;&#x7684;feature&#x505A;&#x52A0;&#x6743;&#x548C;&#xFF0C;&#x5176;&#x5B9E;&#x8FD9;&#x79CD;&#x52A0;&#x6743;&#x548C;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x4FEE;&#x6B63;&#x539F;&#x6765;&#x7684;feature&#x4E5F;&#x503C;&#x5F97;&#x5546;&#x69B7;&#x3002;&#x4E0D;&#x8FC7;&#x8FD9;&#x79CD;update&#x5F62;&#x5F0F;&#x4E5F;&#x662F;&#x501F;&#x9274;&#x81EA;&#x5176;&#x4ED6;&#x7684;Graph Neural Network&#x65B9;&#x6CD5;&#xFF1A;</p>
<p><script type="math/tex; ">d_i^{t+1}=(1-α)d_i^{t+1}+α\sum_{j=1}^N h(d_i,d_j)t_i^t</script></p>
<p>&#x8FD9;&#x91CC;&#x8FB9;&#x7684;h&#x5F80;&#x5F80;&#x662F;&#x65E0;&#x76D1;&#x7763;&#x7684;&#xFF0C;&#x800C;SGGNN&#x7684;W&#x662F;&#x53EF;&#x4EE5;&#x6709;&#x76D1;&#x7763;&#x8BAD;&#x7EC3;&#x5F97;&#x5230;&#x7684;&#xFF0C;&#x5C31;&#x6BD4;&#x5176;&#x4ED6;GNN&#x7684;&#x65B9;&#x6CD5;&#x8981;&#x597D;&#x4E00;&#x70B9;&#x3002;</p>
<p>&#x5B9E;&#x73B0;&#x7EC6;&#x8282;&#x4E0A;&#xFF0C;&#x4E0E;DGRW&#x7C7B;&#x4F3C;</p>
<ul>
<li>&#x9009;&#x62E9;48&#x4E2A;&#x4EBA;&#xFF0C;&#x6BCF;&#x4E2A;&#x4EBA;&#x6709;4&#x4E2A;&#x56FE;&#xFF0C;&#x5171;192&#x5F20;&#x56FE;</li>
<li>&#x6BCF;&#x4E2A;&#x4EBA;&#x7684;4&#x5F20;&#x56FE;&#x91CC;&#xFF0C;&#x4E00;&#x5F20;&#x505A;probe&#xFF0C;&#x5176;&#x4ED6;&#x505A;gallery&#xFF0C;gallery&#x662F;&#x6240;&#x6709;&#x4EBA;&#x5171;&#x7528;&#x7684;&#xFF0C;&#x4E8E;&#x662F;&#x6709;Mx(K-1)=144&#x4E2A;gallery&#x56FE;&#x7247;&#xFF08;&#x8BBA;&#x6587;&#x91CC;&#x7684;&#x987A;&#x5E8F;&#x5E94;&#x8BE5;&#x662F;&#x5199;&#x53CD;&#x4E86;&#xFF09;</li>
<li>&#x7528;siamese CNN&#x7B97;&#x51FA;48_144&#x4E2A;P2G&#x76F8;&#x4F3C;&#x5EA6;&#xFF0C;144_144&#x4E2A;G2G&#x76F8;&#x4F3C;&#x5EA6;</li>
<li>&#x4E3A;&#x6BCF;&#x4E2A;probe&#x53D6;top100&#x4E2A;gallery&#x56FE;&#x7247;&#x6784;&#x6210;G2G&#x56FE;&#xFF0C;&#x4E8E;&#x662F;W&#x77E9;&#x9635;&#x5927;&#x5C0F;&#x4E3A;100x100</li>
<li>&#x7528;W&#x77E9;&#x9635;&#x66F4;&#x65B0;p2g&#x76F8;&#x4F3C;&#x5EA6;&#x7279;&#x5F81;&#xFF0C;&#x5BF9;&#x76F8;&#x4F3C;&#x5EA6;&#x7279;&#x5F81;&#x52A0;dense&#x5C42;&#x518D;&#x505A;&#x4E8C;&#x5206;&#x7C7B;loss&#x7EA6;&#x675F;&#x5373;&#x53EF;</li>
<li>&#x6D4B;&#x8BD5;&#x4E0E;DGRW&#x57FA;&#x672C;&#x76F8;&#x540C;&#xFF0C;&#x533A;&#x522B;&#x53EA;&#x5728;&#x4E8E;&#x66F4;&#x65B0;&#x7684;&#x662F;&#x76F8;&#x4F3C;&#x5EA6;feature&#x800C;&#x975E;&#x76F8;&#x4F3C;&#x5EA6;&#x7ED3;&#x679C;&#x3002;</li>
</ul>
<h3 id="experiment">Experiment</h3>
<p>&#x8DDF;&#x522B;&#x7684;&#x65B9;&#x6CD5;&#x5BF9;&#x6BD4;&#x5C31;&#x4E0D;&#x7528;&#x770B;&#x4E86;&#xFF0C;&#x6211;&#x4EEC;&#x6765;&#x770B;Ablation Study</p>
<p>DGRW</p>
<p><img src="cuhk_sentimes_3.png" alt="">
baseline rank1&#x5C31;91%&#x4E86;&#x6211;&#x8FD8;&#x80FD;&#x8BF4;&#x4EC0;&#x4E48;&#xFF0C;&#x6D41;&#x4E0B;&#x4E86;&#x4E0D;&#x4F1A;&#x8C03;&#x53C2;&#x7684;&#x6CEA;&#x6C34;&#xFF0C;&#x4E0D;&#x8FC7;&#x770B;baseline+triplet&#x5C45;&#x7136;&#x8FD8;&#x6389;&#x4E86;&#xFF0C;&#x8BF4;&#x660E;&#x4ED6;&#x4EEC;&#x7684;hack&#x6CDB;&#x5316;&#x80FD;&#x529B;&#x5176;&#x5B9E;&#x4E0D;&#x5F3A;&#xFF0C;&#x53E6;&#x5916;&#x9488;&#x5BF9;&#x4E24;&#x4E2A;&#x4E3B;&#x8981;&#x7684;&#x521B;&#x65B0;&#x70B9;&#xFF0C;group shuffle&#x4E5F;&#x6CA1;&#x6709;&#x6BD4;dropout&#x6548;&#x679C;&#x8981;&#x597D;&#x591A;&#x5C11;&#xFF0C;random walk&#x4E5F;&#x6CA1;&#x6709;&#x6BD4;reranking&#x597D;&#x591A;&#x5C11;&#x3002;&#x4E0D;&#x8FC7;&#x6709;&#x4E00;&#x4E2A;&#x73B0;&#x8C61;&#xFF0C;mAP&#x6BD4;top1&#x63D0;&#x9AD8;&#x7684;&#x591A;&#xFF0C;&#x8BF4;&#x660E;&#x8FD9;&#x79CD;&#x57FA;&#x4E8E;g2g&#x5173;&#x7CFB;&#x7684;&#x65B9;&#x6CD5;&#xFF0C;&#x901A;&#x5E38;&#x662F;&#x7528;&#x5F97;&#x5206;&#x8F83;&#x9AD8;&#x7684;gallery&#x56FE;&#x50CF;&#x628A;gallery&#x4E2D;&#x5F97;&#x5206;&#x6BD4;&#x8F83;&#x4F4E;&#x7684;&#x5BF9;&#x8C61;&#x62C9;&#x4E0A;&#x6765;&#x4E86;&#x3002;</p>
<p>SGGNN</p>
<p><img src="cuhk_sentimes_4.png" alt="">
&#x7ED3;&#x679C;&#x4E5F;&#x8DDF;random walk&#x7C7B;&#x4F3C;&#x3002;</p>
<h3 id="&#x603B;&#x7ED3;">&#x603B;&#x7ED3;</h3>
<p>&#x5C06;graph&#x4E4B;&#x95F4;&#x7684;&#x5173;&#x8054;&#x878D;&#x5408;&#x5230;&#x795E;&#x7ECF;&#x7F51;&#x7EDC;&#x8BAD;&#x7EC3;&#x4E2D;&#x63D0;&#x4F9B;&#x4E86;&#x66F4;&#x4E30;&#x5BCC;&#x7684;&#x76D1;&#x7763;&#x4FE1;&#x53F7;&#xFF0C;&#x57FA;&#x4E8E;Graph&#x7684;&#x65B9;&#x6CD5;&#x867D;&#x7136;&#x7ED3;&#x679C;&#x4E0A;&#x63D0;&#x5347;&#x4E0D;&#x660E;&#x663E;&#xFF08;&#x53EF;&#x80FD;&#x662F;baseline&#x592A;&#x5F3A;&#x4E86;&#x5427;&#xFF09;&#xFF0C;&#x4F46;&#x521B;&#x65B0;&#x6027;&#x662F;&#x6709;&#x7684;&#x3002;</p>

                                
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